Life Comes Only From Life.

The Greatest Disorder Of The Mind Is To Let Will Direct It.

Science Belongs To No One Country.

Without Theory, Practice Is But Routine Born Of Habit. Theory Alone Can Bring Forth And Develop The Spirit Of Invention. ... [do Not] Share The Opinion Of Those Narrow Minds Who Disdain Everything In Science Which Has Not An Immediate Application. ... A Theoretical Discovery Has But The Merit Of Its Existence: It Awakens Hope, And That Is All. But Let It Be Cultivated, Let It Grow, And You Will See What It Will Become.

There Is A Time In Every Man's Life When He Looks To His God, When He Looks At His Life, When He Wonders How He Will Be Remembered.

In The Fields Of Observation Chance Favors Only Those Minds Which Are Prepared.